In the same way as other antioxidants, vitamin E improves immune function. It does this by fighting off free radicals, which can damage cells. Almonds are another excellent source of vitamin E. They also contain manganese, magnesium , and fiber. A small handful or a quarter of a cup of almonds is a healthful snack that may benefit the immune system.

Oranges and kiwis are an excellent source of vitamin C, which is the vitamin that many people turn to when they feel a cold developing. While scientists are still not sure exactly how it helps, vitamin C may reduce the duration of common cold symptoms and improve the function of the human immune system.

For people trying to avoid the sugar in fruit, red bell peppers are an excellent alternative source of vitamin C. Stir-frying and roasting both preserve the nutrient content of red bell peppers better than steaming or boiling, according to a study on cooking methods.

That said, it is important to remember that the immune system is complex. Eating a healthful, balanced diet is just one way to support immune health. It is also essential to be mindful of the other lifestyle factors that may affect immune system health, such as exercising and not smoking. Anyone who gets frequent colds or other illnesses and is concerned about their immune system should speak to a doctor.

In this article, we describe types of foods that may weaken the immune system and others that may help support it. Learn more here. What are the best ways to boost the immune system and can they give you enhanced protection against infections and diseases?

We take a look. While no drinks can quickly give the immune system a boost, staying hydrated and getting plenty of nutrients is essential for immune function. Elderberry supplements may help support immune system health. The immune system defends the body from invaders such as viruses, bacteria, and foreign bodies.

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Medical News Today. Health Conditions Health Products Discover Tools Connect. The best foods for boosting your immune system. Medically reviewed by Katherine Marengo LDN, R. Which foods boost the immune system Other ways to boost the immune system Summary.

Which foods boost the immune system? Share on Pinterest Blueberries have antioxidant properties that may boost the immune system. Share on Pinterest Garlic may help to prevent colds. Other ways to boost the immune system. Share on Pinterest Washing hands properly may help make the immune system stronger.

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Related Coverage. What to eat and avoid to maintain a strong immune system. Medically reviewed by Kim Rose-Francis RDN, CDCES, LD. Tips for a healthy immune system What are the best ways to boost the immune system and can they give you enhanced protection against infections and diseases? Water is still the best thing you can drink.

Each person varies, but aim to drink eight, 8-ounce glasses of water a day. That can be hard to do. Your body get dehydrated after hours of sleep, so drink a glass of water right away when you wake up.

If you struggle with drinking enough water, set reminders throughout the day or drink a glass of water before each meal. Caffeine-free hot tea can count as part of your daily water tally. Exercise is essential to preventing chronic illnesses such as heart disease and high blood pressure, and to keep your weight in control.

Exercise also contributes to a healthy immune system. It promotes good blood circulation, which helps your immune system do its job more efficiently. Daily stress can overwork your immune system and drain your ability to stay healthy. Big and little daily stressors can constantly push your immune system.

Make time each day to do things to "refill your tank. It can include setting aside time to read, meditate, talk a walk, do a hobby or get a massage.

Discover the benefits of mindfulness Deep Breathing techniques. Sleep is essential for the health of your body and brain. Good sleep helps strengthen your immune system. Adults should try for at seven to eight hours of sleep a day. Children and teens need more sleep.

A healthful diet is important to a healthy immune system. An eating plan that focuses on plants, fiber, protein and healthful fats can help you feel better and heal faster. Protein also is essential to a body that is healing. Some of the best foods to boost immunity contain probiotics, live bacteria and yeasts that are good for your gut health , and digestive system.

Probiotics can be found in fermented and cultured foods. Look on the food label for "live active cultures". Some foods that contain probiotics are:. If you want to explore taking a probiotic supplement, talk to your health care provider.

A variety of options are available in the vitamin section of grocery and natural food stores. Eating a healthy, balanced diet can help keep you well.

Eat a rainbow of vegetables and fruits daily to ensure you're getting a variety of nutrients.

Accessed May 13, Western diet and the immune system: an inflammatory connection. Physical Activity Guidelines for Americans , 2nd edition [PDF Washington, DC: US Department of Health and Human Services; J Sport Health Sci.

Exercise, immunity, and illness. In: Zoladz JA, ed. Muscle and Exercise Physiology. Academic Press. T lymphopaenia in relation to body mass index and TNF—alpha in human obesity: adequate weight reduction can be corrective.

Clin Endocrinol Oxf. Changes in nutritional status impact immune cell metabolism and function. Front Immunol. Increased risk of influenza among vaccinated adults who are obese. Int J Obes Lond. Obesity as a predictor of poor antibody response to hepatitis B plasma vaccine. Hepatitis B vaccine immunoresponsiveness in adolescents: a revaccination proposal after primary vaccination.

Comparison of a triple antigen and a single antigen recombinant vaccine for adult hepatitis B vaccination. J Med Virol.

Reduced tetanus antibody titers in overweight children. Swindt, Christina [corrected to Schwindt, Christina]]. Sleep and health: Everywhere and in both directions. Arch Intern Med. Skip directly to site content Skip directly to search. Español Other Languages. Six Tips to Enhance Immunity Español Spanish.

Minus Related Pages. Food Assistance. Reduced Risk of Death. For More Information Healthy habits to protect against flu. MyPlate Plan. Physical activity basics. Healthy eating for a healthy weight.

Tips to get more sleep. Support for quitting smoking Preventing excess alcohol use. References 1 Childs CE, Calder PC, Miles EA. Connect with Nutrition, Physical Activity, and Obesity. fb icon twitter icon youtube icon alert icon.

Last Reviewed: September 5, Source: Division of Nutrition, Physical Activity, and Obesity , National Center for Chronic Disease Prevention and Health Promotion. Facebook Twitter LinkedIn Syndicate.

home DNPAO Home. Research has shown that steaming or microwaving are the best ways to keep more nutrients in the food.

Garlic adds flavor to food and has long been used for medicinal purposes. Early civilizations recognized its value in fighting infections. Garlic may also slow down hardening of the arteries, and people use it to treat high blood pressure.

Ginger is another ingredient many turn to after getting sick. Ginger may help decrease inflammation, which can help reduce a sore throat and inflammatory illnesses. It may also help with nausea.

Ginger may also decrease chronic pain and might even possess cholesterol-lowering properties. Similar to broccoli, spinach is healthiest when cooked as little as possible so that it retains its nutrients.

However, light cooking makes it easier to absorb the vitamin A and allows other nutrients to be released from oxalic acid , an antinutrient. Check out some spinach recipes here. These cultures may stimulate your immune system to help fight diseases.

Try to get plain yogurts rather than the kind that are flavored and loaded with sugar. You can sweeten plain yogurt yourself with healthy fruits and a drizzle of honey instead. Yogurt can also be a great source of vitamin D , so try to select brands fortified with this vitamin. Clinical trials are even in the works to study its possible effects on COVID Research so far suggests that vitamin D deficiency may increase the risk for COVID19 and the severity of disease progression in people with the infection.

Experts therefore believe supplementation may protect people with a vitamin D deficiency. However, there is no evidence that vitamin D can treat a COVID19 infection. When it comes to preventing and fighting off colds, vitamin E tends to take a backseat to vitamin C.

However, this powerful antioxidant is key to a healthy immune system. Nuts, such as almonds , are packed with the vitamin and also have healthy fats. Adults only need about 15 mg of vitamin E each day. Sunflower seeds are full of nutrients, including phosphorous , magnesium , and vitamins B6 and E.

Vitamin E is important in regulating and maintaining immune system function. Other foods with high amounts of vitamin E include avocados and dark leafy greens.

Sunflower seeds are also high in selenium. Just 1 ounce contains nearly half the selenium that the average adult needs daily. A variety of studies , mostly performed on animals, have looked at its potential to combat viral infections such as swine flu H1N1. You may know turmeric as a key ingredient in many curries.

This bright yellow, bitter spice has also been used for years as an anti-inflammatory in treating both osteoarthritis and rheumatoid arthritis.

Research shows that high concentrations of curcumin , which gives turmeric its distinctive color, can help decrease exercise-induced muscle damage. Curcumin has promise as an immune booster based on findings from animal studies with antimicrobial properties.

More research is needed. Both green and black teas are packed with flavonoids , a type of antioxidant. Where green tea really excels is in its levels of epigallocatechin gallate EGCG , another powerful antioxidant. Research has suggested that EGCG may have antiviral properties that support the immune system.

The fermentation process black tea goes through destroys a lot of the EGCG. Green tea, on the other hand, is steamed and not fermented, so the EGCG is preserved.

Papayas also have a digestive enzyme called papain that has anti-inflammatory effects. Papayas have decent amounts of potassium , magnesium, and folate , all of which are beneficial to your overall health.

Like papayas, kiwis are a rich source of essential nutrients, including folate, potassium, vitamin K , and vitamin C. The soup may help lower inflammation, which could improve symptoms of a cold.

Poultry, such as chicken and turkey, is high in vitamin B6. About 3 ounces of light turkey or chicken meat contains nearly one-third of your daily recommended amount of B6. Vitamin B6 is an important player in many of the chemical reactions that happen in the body.

Stock or broth made by boiling chicken bones contains gelatin , chondroitin, and other nutrients helpful for gut healing and immunity. Too much zinc can actually inhibit immune system function. You may want to focus on eating a balanced diet with plenty of fresh foods and whole grains, engage in at least minutes of physical activity per week, get enough sleep, manage stress with deep breathing or talk therapy, avoid or quit smoking, and limit alcohol consumption.

Preliminary research suggests vitamin C may be involved in the development and function of white blood cells. It seems vitamin C may improve the reproduction of B- and T-cells , which are important white blood cells for the immune system.

The amount of vitamin C needed for increasing white blood cells may depend on the condition and overall health needs. More research in humans is needed to better understand the link between vitamin C and white blood cells.

To raise your white blood cell count , you may want to avoid alcohol and tobacco use, take Omega-3s and zinc, and eat a balanced diet. For example, a study found that the Mediterranean diet had an effect on the white blood cell counts of adults at risk for cardiovascular disease.

Depending on the cause of low white blood cells, you may also need to take medications like myeloid growth factors. Antiviral foods may include fermented vegetables kimchi , fermented milk yogurt and kefir , herbs oregano, fennel, peppermint, and aloe vera , garlic, ginger, turmeric, black cumin, cinnamon, licorice root, mushrooms, and citrus fruits.

Some foods may boost your immune system while others will help with their antimicrobial properties. This means they may help fight bacteria, viruses, and other pathogens that cause infections.

Examples include herbs and spices oregano , cinnamon , clove , and rosemary , cruciferous vegetables kale and rutabaga , citrus fruits, parsley , and a wide range of other plant-based foods.